weird behavior with entity updating

[Alessandro Ferrucci]

Yo guys,

I'm attempting to update an entity like so

manager.getTransaction().begin();
//attach entity to pers. context
//works fine
Obejct oldObj = doRead(newObj, manager);

//copy fields in newObj to oldObj
doMerge(oldObj,newObj);

//commit trans.
manager.getTransaction().commit();

here's the impl of doMerge, simple stuff...

private void mergeAdapter(IJPAAdapter src, Object dest)
   {
       Field[] destFields = dest.getClass().getDeclaredFields();

       try
       {
           for (Field f : destFields)
           {
               if (!(f.isAnnotationPresent(Transient.class)))
               {
                   f.setAccessible(true);
                   f.set(dest, f.get(src));
               }
           }
       }
       catch (Exception ex)
       {
           ex.printStackTrace();
           throw new RuntimeException(ex);
       }
   }

The fields get copied fine, however this changed entity never gets updated
in the data store.


however, if I create a copy method within my entity class which copies the
fields from the other object....this works fine.

I cannot figure out why the reflective solution wouldn't work but the second
would.  Any thoughts?

thx a bunch

--
alessandro ferucci =]